Secondary battery.



G. I. RAWSON & L. B. SHULTZ.

SECONDARY BATTERY.

AriPLIoATIoN FILED JAN. 9. 1911.

Patented July 4, 1911.

/NvElv'ro/z's Y- Grant I. Rawson L. B. Shultz and LLEWELLYN B.

United States of America, residing at thev GEANT I. nawsoN AND LLEWE'LLYN B.

To PILLEY PACKING & FLUE BRUSH SHULTZ, OF ST. LOUIS, MISSOURI, ASSIGNORS MANUFACTURING COMPANY, OF ST. LOUIS,

MISSOURI, A CORPORATION OF MISSOURI.

SECONDARY BATTERY.

Specicaton of Letters Patent. Application led Tanuary 9, 1911. Serial No. 601,522.

To all whomfit may concern:

Be it known that we, GRANT I. RAwsoN SHUnTz, citizens of the city of St. Louis, Missouri, have invented a certain new and useful Secondary Battery,

of which the following is such aV f ull, clear,l

and exact description as will enable any one skilled in the art to which it appertainsA to.

make and use the same, reference being had to the accompanying drawings, forming part of this speciticatioi Our invention relates to a secondary battery and more particularly to that form of secondary batteries used to furnish current to miners lamps. 'The plates or electrodes of batteries of the class ab'ove referred to are usually inclosed in a container formed of hard rubber and the terminals brought out through the walls of said container. IVe have found in practice that these terminals are liable to break out the walls of the container thus rendering the batteries useless.

The main object of our .invention is to overcome the difficulty above referred to.

4In, the accompanying drawings which illustrate oneform of battery made in accordance with our invention Figurevl is a vertical cross section on fthe line`1-1 of Fig. 2; Fig. 2 is a section on the line 2-2 of Fig. l and Fig. 3 is a side elevation of the upper portionof the battery. l Like marks of reference refer to similar parts in the several views of the drawings. -5 represents the container which is preferably formed of` hard rubber.y Within the recesses `in the ends of the cap container 5 are situated trodes which may be of any suitable number.

\ In the drawings we have shown two negative electrodes 6 between which is situated the positive electrode 7. The electrodes are surrounded by the electrolyte 8.

9 is a block of wood or other suitable insulating material forming a cap for the container 5. This cap 9 is provided with a central opening 10 and also with a groove 1l situated at its lower face. Secured to the ends of the cap 9 by means of screws 12 are angle plates 13. Extending upwardly froml the electrodes 6 and 'T are contactstri s 14, the upper ends of which are let into suitable 9. .These strips 14 are secured to the Jangle plates.13

the plates or elecliable to Athrough 'what we claim as new c by Vmeans of screws 15. Each of the screws 15 isprovided with a locking nut 16 and a Patented July 4i, 1911.

clamping nut 17 by means of which the ter; Y

minal wires A lfrom the lamp 'may be .connected.l In order to secure good electrical contact between the strips 14 and the screws 15 we prefer to'solder the said strips tothe screws.

After" the cap is placed in position on the container 5 a tube 18 is inserted through the opening 10 inorder to allow of liquid being supplied to the battery and also'to allow the escape of any gases generated in the battery. After the tube 18 is placed in position a tilling 19 of plastic material is inserted into the t'op of the battery'through the opening 10 so as to completely fill the space above the electrodes and also the opening 10. This material is preferably a. mixture of asphaltum and resin but any similar plastic material may be used. -This plastic mate:-

rial irmly secures the cap 9 in positionon the container 5. Inorder to still further protect the container 5 and secure the parts more firmly in position we provide a sheet metal casing 20 which completely surrounds the container 5 and provided near its top with openings throughwhich pass bolts 21. These bolts 21 also pass through openings in the cap 9 and are secured in position by means of nut-s 22. The'casing 20 may be provided with .a loop 23, as shown in Fig. 2 for convenience in carrying the battery. In

order to more lirmly secure the casing- 20 to the the lar to the filling 19 hereinbefore described.

It will be seen that our batterygwhile light and compact in construction is very strong and the terminals cannot betorn loose as is happen when they are brought out container 5, we "prefer to place between tainer. 5. Y.

Havmg fully descrlbed our invention,

by Letters Patent of the United- States, is'

1. In a secondarybattery, the combmatlon trodes, a block of insulating material frming a cap-for said container and provided with an opening, terminals the walls of the hard rubber concarried .by said cap and connected to said electrodes, and a filling of plastic material'lling said parts a lining of material 24, simiandi'desi'e to secure wlth electrodes, Vof a container for the elec-V A the open- Vconnected to said electro`des,`a sheet metal casing surrounding said container, a lining of plastic material in said casing, and transverse bolts passing through said caslng and Tn a secondary battery, the combination with electrodes, of a container for the electrodes, a block of insulating material forming a cap for said container, terminals carried by said cap and connected to said electrodes, a tillinnr of plastic material securing said cap to said container, a casing surrounding said container, and means for securing said casingto said cap.

` 4. Ina secondary battery, the combination with electrodes, of a container for the electrodes, a blockl of insulating material forming a cap for said container, terminals carried by said cap vand connected to said electrodes, a filling of plastic material securing said cap to said container, a casing surrounding said container, and transverse l bolts passingthrough said casing and cap.

the combina- 5. In a secondary battery,

for said tion with electrodes, a container a block of insulating material for said container, angle plates secured to the ends of said cap, terminals carried by said angle plates and con nected to said electrodes, and means for securing said cap to said container.

6. ln a secondary battery, 4the combination with electrodes,.of a container for said electrodes, a block of insulating material forming a cap .for -said container, angle plates secured to the ends of said cap, terminals carried by said angle plates and connected to said electrodes, a casing for said electrodes, and means for securing said casing to said cap. f

7. In a secondary battery, the combinaelectrodes, forming av cap tion with electrodes, of a container for said electrodes, a block of insulating material forming a cap for said container, angle plates secured to the ends of said cap, terminals carried by said angle plates and connected to said electrodes, a filling of plastic material securing said cap to said container, a casing for said container, and transverse bolts securing said casing to said cap;

In testimony whereof, We have hereunto set our hands and atlixed our'seals in the Apresence of the tWo subscribing Witnesses.

- GRANT I. Rawson. v LLEWELLYN B. SHULTZ.

Witnesses:

W. A. ALEXANDER,

ELIZABETH BAILEY. 

